There are things that we don "t want to happen but have to accept, things we don" t want to know but have to learn, and people we can "t live without but have to let go."

总有一些事，我们不愿它发生，却必须接受；总有些东西，我们不想知道，却必须了解；总有些人，我们不能没有，却必须学着放手。

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So let's go to a second clicker question here and try one more. So why don't you tell me how many possible orbitals you can have in a single atom that have the following two quantum numbers?

让我们来看下一道题目,你们来告诉我,有多少个可能的轨道,含有这些量子数呢？

麻省理工公开课 - 化学原理课程节选

Why don't we go ahead and take a 5-minute break and I'll let this one run to completion.

下面我们先休息5分钟,等它们执行完毕。

哈佛公开课 - 计算机科学课程节选

Let me go ahead and make, don't do this.

我们继续编译，不要这样做。

哈佛公开课 - 计算机科学课程节选

The fundamental principle is a simple one that is apparently difficult to implement: Keep doing the same things that brought you to power in the first place, and don't let success and power go to your head.

FORBES: The Essentials Of Staying In Power

You might ask, 'Why can't the water company just go into tick-over mode now and let us have bills that don't go up any more?

BBC: South West Water customers asked how cash should be spent

And when they don't, most voters are content to let them go and play beside the sea.

ECONOMIST: Political activism